1-be sure to backup
2-be sure if your iphone factory locked, you only can use factory micro sim
3-there is teather jailbreak with unlock if you want
4-most important---- if you want unlock please update your iphone without upgrading baseband

Well i was searching through forumns and i saw that an unlocked fone will contain app like ultrasnow and baseband if it is unlocked by someone.
But my fone doeant contain any of them its jZ cydia.
What does this signify??
Pl suggest

Well i was searching through forumns and i saw that an unlocked fone will contain app like ultrasnow and baseband if it is unlocked by someone.
But my fone doeant contain any of them its jZ cydia.
What does this signify??
Pl suggest

That signifies that your phone was not unlocked through a jailbreak. Keep in mind that outside of the US, it's much easier to purchase an unlocked iPhone, or even have your carrier unlock it for you.

If I were you I might try talking to the place that did your first unlock. I don't mean any offense, but it seems like there are some parts that you aren't entirely sure about (every phone has a baseband, for instance, but which one it has can mean the difference between locked/unlocked--yours is listed in Settings>General>About>Modem Firmware).

Updating and keeping an unlock isn't always easy if your phone isn't factory unlocked. Do you know offhand if your dealer used a Gevey SIM?